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A novel electropolymerization method for Ppy nanowire-based NH3 gas sensor with low contact resistance
- Authors
- Kim, Dong-uk; Yoo, Bongyoung
- Issue Date
- Dec-2011
- Publisher
- Elsevier BV
- Keywords
- Polypyrrole; Nanowire; Ammonia; Sensor; Electropolymerization
- Citation
- Sensors and Actuators, B: Chemical, v.160, no.1, pp.1168 - 1173
- Indexed
- SCIE
SCOPUS
- Journal Title
- Sensors and Actuators, B: Chemical
- Volume
- 160
- Number
- 1
- Start Page
- 1168
- End Page
- 1173
- ISSN
- 0925-4005
- Abstract
- One-dimensional (1-D) nanostructures of conducting polymers are a superior choice in chemical sensors and biosensors due to possibility of constructing sensors with higher sensitivity and fast detection. Here we report a new method for fabricating two electrode sensing device with low contact resistance by electrochemical synthesis of polypyrrole (Ppy) nanowires. This approach shows a new patterning technique which makes the addressable Ppy nanowires on the pre-patterned sub-Ni nanowires, in which large contact area between metal electrodes and Ppy significantly reduced the contact resistance. Performance of Ppy nanowire-based gas sensors for the detection of sub-ppm level concentrations of ammonia (NH3) gas is investigated. (C) 2011 Elsevier B.V. All rights reserved.
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Related Researcher
- Yoo, Bong young
- ERICA 공학대학 (DEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING)